10223 + Interview Questions in Chemistry

1.	Question 3(ii) Express the number appearing in the following statements in standard form: Charge of an electron is 0.000,000,000,000,000,00016 coulomb.
Answer» Question 3(ii) Express the number appearing in the following statements in standard form: Charge of an electron is 0.000,000,000,000,000,00016 coulomb.

Discussion

2.	Martha mixed some marble powder with dry ice. On keeping the mixture in open air for a few minutes, the dry ice vanished and only the dry powder was left behind. The dry ice vanished because of
Answer» Martha mixed some marble powder with dry ice. On keeping the mixture in open air for a few minutes, the dry ice vanished and only the dry powder was left behind. The dry ice vanished because of

2.

Martha mixed some marble powder with dry ice. On keeping the mixture in open air for a few minutes, the dry ice vanished and only the dry powder was left behind. The dry ice vanished because of

Answer»

Martha mixed some marble powder with dry ice. On keeping the mixture in open air for a few minutes, the dry ice vanished and only the dry powder was left behind.

The dry ice vanished because of

Discussion

3.	The mass of an electron is approximately 1/2000 times that of a/an :
Answer» The mass of an electron is approximately 1/2000 times that of a/an :

Discussion

4.	The compound which could not act both as oxidizing as well as reducing agent is
Answer» The compound which could not act both as oxidizing as well as reducing agent is

Discussion

5.	Question 13 (e) The phenomenon of change of a liquid into the gaseous state at any temperature below its boiling point is called ___
Answer» Question 13 (e) The phenomenon of change of a liquid into the gaseous state at any temperature below its boiling point is called ___

Discussion

6.	Limestone on heating decomposes into quick lime and carbon dioxide gas.What type of reaction is this?
Answer» Limestone on heating decomposes into quick lime and carbon dioxide gas.What type of reaction is this?

Discussion

7.	What remains in the petri dish if a mixture of salt, sand and water is heated?
Answer» What remains in the petri dish if a mixture of salt, sand and water is heated?

Discussion

8.	Question 5(c) Write word equations and then balanced equations for the reaction taking place when – (c) Dilute sulphuric acid reacts with aluminium powder.
Answer» Question 5(c) Write word equations and then balanced equations for the reaction taking place when – (c) Dilute sulphuric acid reacts with aluminium powder.

Discussion

9.	What is atomic mass in detail? What is formula to calculate the atomic mass of atom and how it's formula is made explain in detail?
Answer» What is atomic mass in detail? What is formula to calculate the atomic mass of atom and how it's formula is made explain in detail?

Discussion

10.	a) Bromine particles are almost twice as chlorine particle. Which has diffuses faster? Bromine or chlorine? Reason it out.
Answer» a) Bromine particles are almost twice as chlorine particle. Which has diffuses faster? Bromine or chlorine? Reason it out.

10.

a) Bromine particles are almost twice as chlorine particle. Which has diffuses faster? Bromine or chlorine? Reason it out.

Answer»

a) Bromine particles are almost twice as chlorine particle.

Which has diffuses faster? Bromine or chlorine? Reason it out.

Discussion

11.	Which type of compound is MgCl2?
Answer» Which type of compound is $M g {C l}_{2}$ ?

Discussion

12.	Choose the non-metallic oxide from the following:
Answer» Choose the non-metallic oxide from the following:

Discussion

13.	What is dilute solution?
Answer» What is dilute solution?

Discussion

14.	The source of oxygen for the aquatic animals is ________.
Answer» The source of oxygen for the aquatic animals is ________.

Discussion

15.	When you crush a candy with hammer, you will notice that it shatters into crystals, which look very much alike. If you melt this candy it is observed that the it melts into a homogeneous liquid. You read its ingredient label: sugar, artificial color, and natural flavor. Based on this investigation, this candy is an example of a:
Answer» When you crush a candy with hammer, you will notice that it shatters into crystals, which look very much alike. If you melt this candy it is observed that the it melts into a homogeneous liquid. You read its ingredient label: sugar, artificial color, and natural flavor. Based on this investigation, this candy is an example of a:

Discussion

16.	What is Dry Ice or Solid Carbon dioxide?
Answer» What is Dry Ice or Solid Carbon dioxide?

Discussion

17.	What is Antimatter? And how it is made ? how it is useful for us
Answer» What is Antimatter? And how it is made ? how it is useful for us

Discussion

18.	Bond between hydrogen and chlorine in HCl is
Answer» Bond between hydrogen and chlorine in HCl is

Discussion

19.	Explain how bromine vapour diffuse into air
Answer» Explain how bromine vapour diffuse into air

Discussion

20.	Magnetic moment 2.84 B.M. is given by (At. nos. Ni = 28, Ti = 22, Cr = 24, Co = 27)
Answer» Magnetic moment 2.84 B.M. is given by (At. nos. Ni = 28, Ti = 22, Cr = 24, Co = 27)

Discussion

21.	What is scientific or exponential notation?
Answer» What is scientific or exponential notation?

Discussion

22.	Why is an atom neutral inspite of the presence of charged particles in it?
Answer» Why is an atom neutral inspite of the presence of charged particles in it?

Discussion

23.	Complete the following : (a) When the nuclei of two different reacting atoms are of ......... mass, then a bond so formed is called ...................... covalent bond (equal, unequal, polar, non-polar). (b) In case of non-polar covalent bond, the covalent bond is formed in the .......... of atoms and shared electrons are ........... distributed (corner, middle, equally, unequally) (c) The ions in ................ compounds are held very strongly due to strong ............ forces (electrovalent, covalent, electromagnetic, electrostatic).
Answer» Complete the following : (a) When the nuclei of two different reacting atoms are of ......... mass, then a bond so formed is called ...................... covalent bond (equal, unequal, polar, non-polar). (b) In case of non-polar covalent bond, the covalent bond is formed in the .......... of atoms and shared electrons are ........... distributed (corner, middle, equally, unequally) (c) The ions in ................ compounds are held very strongly due to strong ............ forces (electrovalent, covalent, electromagnetic, electrostatic).

23.

Complete the following : (a) When the nuclei of two different reacting atoms are of ......... mass, then a bond so formed is called ...................... covalent bond (equal, unequal, polar, non-polar). (b) In case of non-polar covalent bond, the covalent bond is formed in the .......... of atoms and shared electrons are ........... distributed (corner, middle, equally, unequally) (c) The ions in ................ compounds are held very strongly due to strong ............ forces (electrovalent, covalent, electromagnetic, electrostatic).

Answer»

Complete the following :

(a) When the nuclei of two different reacting atoms are of ......... mass, then a bond so formed is called ...................... covalent bond (equal, unequal, polar, non-polar).

(b) In case of non-polar covalent bond, the covalent bond is formed in the .......... of atoms and shared electrons are ........... distributed (corner, middle, equally, unequally)

(c) The ions in ................ compounds are held very strongly due to strong ............ forces (electrovalent, covalent, electromagnetic, electrostatic).

Discussion

24.	How can the nucleous of an atom under go changes ( neutron changing its charge )
Answer» How can the nucleous of an atom under go changes ( neutron changing its charge )

Discussion

25.	why and how do the molecules in substances like solid,liquid and gases,etc attract each other?
Answer» why and how do the molecules in substances like solid,liquid and gases,etc attract each other?

Discussion

26.	Enumerate the change that takes place in liquid during evaporation
Answer» Enumerate the change that takes place in liquid during evaporation

Discussion

27.	Melting point of three substances a, b, c are 52 degree Celsius and 75 degree Celsius and 80 degree Celsius. Arrange them in the decreasing order of the interparticle force of attraction in each of them. Also ive a reason for the answer.
Answer» Melting point of three substances a, b, c are 52 degree Celsius and 75 degree Celsius and 80 degree Celsius. Arrange them in the decreasing order of the interparticle force of attraction in each of them. Also ive a reason for the answer.

Discussion

28.	How can we separate sugar and salt?
Answer» How can we separate sugar and salt?

Discussion

29.	difference between saturated solution unsaturated solution and super saturated solution?
Answer» difference between saturated solution unsaturated solution and super saturated solution?

Discussion

30.	What is an atom
Answer» What is an atom

Discussion

31.	A wooden table should be called a solid. Why? [1 MARK]
Answer» A wooden table should be called a solid. Why? [1 MARK]

Discussion

32.	Why and how the valancy of calcium is 2 and why not 0 ?
Answer» Why and how the valancy of calcium is 2 and why not 0 ?

Discussion

33.	Kelvin scale of temperature is regarded as a better scale than Celsius. Why? [2 MARKS]
Answer» Kelvin scale of temperature is regarded as a better scale than Celsius. Why? [2 MARKS]

Discussion

34.	The types of isomerism shown by nitrito-N-pentaaminechromium (III) chloride is/are
Answer» The types of isomerism shown by nitrito-N-pentaaminechromium (III) chloride is/are

Discussion

35.	The metals that produce sound on striking a hard surface are said to be:
Answer» The metals that produce sound on striking a hard surface are said to be:

Discussion

36.	The author's approach towards the dream thoughts can best be described as:
Answer» The author's approach towards the dream thoughts can best be described as:

Discussion

37.	What helps us convert between the number of particles and mass of substance?
Answer» What helps us convert between the number of particles and mass of substance?

Discussion

38.	Which of the following is not a property of metal?
Answer» Which of the following is not a property of metal?

Discussion

39.	While naming a compound consisting of a metal and non-metal, usually the ___is written first and ___is written next.
Answer» While naming a compound consisting of a metal and non-metal, usually the ___is written first and ___is written next.

Discussion

40.	Suppose you have to determine the percentage of carbon dioxide in a sample of a gas available in a container. Which of the following is the best absorbing material for the carbon dioxide?
Answer» Suppose you have to determine the percentage of carbon dioxide in a sample of a gas available in a container. Which of the following is the best absorbing material for the carbon dioxide?

Discussion

41.	When vapour condenses into liquid:
Answer» When vapour condenses into liquid:

Discussion

42.	Which of the following elements has completely filled outermost shells?
Answer» Which of the following elements has completely filled outermost shells?

Discussion

43.	Match the following. Relate physical states used in Chemical reaction to their symbols. Physical StateSymbol1.Gas(A) (dw)2.Solid(B) (g)3.Liquid(C) (aq)4.Dissolved in water(solution with water)(D) (l)(E) (s)(F) (v)
Answer» Match the following. Relate physical states used in Chemical reaction to their symbols. $\begin{matrix} Physical State & Symbol 1. Gas & (A) (d w) 2. Solid & (B) (g) 3. Liquid & (C) (a q) 4. Dissolved in water(solution with water) & (D) (l) (E) (s) (F) (v) \end{matrix}$

43.

Match the following. Relate physical states used in Chemical reaction to their symbols. Physical StateSymbol1.Gas(A) (dw)2.Solid(B) (g)3.Liquid(C) (aq)4.Dissolved in water(solution with water)(D) (l)(E) (s)(F) (v)

Answer»

Match the following.

Relate physical states used in Chemical reaction to their symbols.

$\begin{matrix} Physical State & Symbol 1. Gas & (A) (d w) 2. Solid & (B) (g) 3. Liquid & (C) (a q) 4. Dissolved in water(solution with water) & (D) (l) (E) (s) (F) (v) \end{matrix}$

Discussion

44.	To neutralize completely 20 ml of 0.1 M aqueous solution of H3PO3, the volume of 0.1 M aqueous KOH solution required is:
Answer» To neutralize completely 20 ml of 0.1 M aqueous solution of $H_{3} P O_{3}$ , the volume of 0.1 M aqueous KOH solution required is:

Discussion

45.	Identify the Mg2+ ion from the figure where, n and p represent the number of neutrons and protons respectively.
Answer» Identify the $M g^{2 +}$ ion from the figure where, n and p represent the number of neutrons and protons respectively.

Discussion

46.	Why modern atomic theory says that atom is divisible?
Answer» Why modern atomic theory says that atom is divisible?

Discussion

47.	Q3. What is the atomicity of phosphoric acid ?
Answer» Q3. What is the atomicity of phosphoric acid ?

Discussion

48.	The total number of neutrons in1224Mg2+is:
Answer» The total number of neutrons in¹²₂₄Mg²⁺is:

Discussion

49.	Methane (from Natural gas) is mixed with steam, compressed at 30 atm pressure and passed over a nickel about 8000C to form _______ .
Answer» Methane (from Natural gas) is mixed with steam, compressed at 30 atm pressure and passed over a nickel about 800⁰C to form _______ .

Discussion

50.	Explain the Bose Einstein condensate
Answer» Explain the Bose Einstein condensate

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

Question 3(ii) Express the number appearing in the following statements in standard form: Charge of an electron is 0.000,000,000,000,000,00016 coulomb.

Martha mixed some marble powder with dry ice. On keeping the mixture in open air for a few minutes, the dry ice vanished and only the dry powder was left behind. The dry ice vanished because of

The mass of an electron is approximately 1/2000 times that of a/an :

The compound which could not act both as oxidizing as well as reducing agent is

Question 13 (e) The phenomenon of change of a liquid into the gaseous state at any temperature below its boiling point is called ___

Limestone on heating decomposes into quick lime and carbon dioxide gas.What type of reaction is this?

What remains in the petri dish if a mixture of salt, sand and water is heated?

Question 5(c) Write word equations and then balanced equations for the reaction taking place when – (c) Dilute sulphuric acid reacts with aluminium powder.

What is atomic mass in detail? What is formula to calculate the atomic mass of atom and how it's formula is made explain in detail?

a) Bromine particles are almost twice as chlorine particle. Which has diffuses faster? Bromine or chlorine? Reason it out.

Which type of compound is MgCl2?

Choose the non-metallic oxide from the following:

What is dilute solution?

The source of oxygen for the aquatic animals is ________.

What is Dry Ice or Solid Carbon dioxide?

What is Antimatter? And how it is made ? how it is useful for us

Bond between hydrogen and chlorine in HCl is

Explain how bromine vapour diffuse into air

Magnetic moment 2.84 B.M. is given by (At. nos. Ni = 28, Ti = 22, Cr = 24, Co = 27)

What is scientific or exponential notation?

Why is an atom neutral inspite of the presence of charged particles in it?

How can the nucleous of an atom under go changes ( neutron changing its charge )

why and how do the molecules in substances like solid,liquid and gases,etc attract each other?

Enumerate the change that takes place in liquid during evaporation

Melting point of three substances a, b, c are 52 degree Celsius and 75 degree Celsius and 80 degree Celsius. Arrange them in the decreasing order of the interparticle force of attraction in each of them. Also ive a reason for the answer.

How can we separate sugar and salt?

difference between saturated solution unsaturated solution and super saturated solution?

What is an atom

A wooden table should be called a solid. Why? [1 MARK]

Why and how the valancy of calcium is 2 and why not 0 ?

Kelvin scale of temperature is regarded as a better scale than Celsius. Why? [2 MARKS]

The types of isomerism shown by nitrito-N-pentaaminechromium (III) chloride is/are

The metals that produce sound on striking a hard surface are said to be:

The author's approach towards the dream thoughts can best be described as:

What helps us convert between the number of particles and mass of substance?

Which of the following is not a property of metal?

While naming a compound consisting of a metal and non-metal, usually the ___is written first and ___is written next.

Suppose you have to determine the percentage of carbon dioxide in a sample of a gas available in a container. Which of the following is the best absorbing material for the carbon dioxide?

When vapour condenses into liquid:

Which of the following elements has completely filled outermost shells?

Match the following. Relate physical states used in Chemical reaction to their symbols. Physical StateSymbol1.Gas(A) (dw)2.Solid(B) (g)3.Liquid(C) (aq)4.Dissolved in water(solution with water)(D) (l)(E) (s)(F) (v)

To neutralize completely 20 ml of 0.1 M aqueous solution of H3PO3, the volume of 0.1 M aqueous KOH solution required is:

Identify the Mg2+ ion from the figure where, n and p represent the number of neutrons and protons respectively.

Why modern atomic theory says that atom is divisible?

Q3. What is the atomicity of phosphoric acid ?

The total number of neutrons in1224Mg2+is:

Methane (from Natural gas) is mixed with steam, compressed at 30 atm pressure and passed over a nickel about 8000C to form _______ .

Explain the Bose Einstein condensate

While naming a compound consisting of a metal and non-metal, usually the _is written first and _is written next.